本世纪下半叶出现的世界范围的信息革命,拉开了知识经济时代到来的序幕。知识经济是与农业经济、工业经济相对而言的,是以知识为基础的经济。它最显著的特征是信息化一生产、管理、流通、消费的高度信息化,因此知 The world-wide information revolution that took place in the second half of this century opened the prelude to the era of knowledge economy. Knowledge economy is relative to agricultural economy and industrial economy, and knowledge-based economy. Its most notable feature is the highly informationalized production, management, circulation and consumption of information